Not yet, I was using the supplied USB cable that came with the Gmax. I researched and read that a lot of people were having similar problems until the upgraded to a powered USB hub to supply the RPi and printer power. Sometimes the power supply's that you get for the RPi arent enough and will drop the connection. I just purchased a Belkin USB powered hub which is on the compatibility list, ill try that along with a new USB cable and report back. Hopefully its just something that simple.
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